tachometer
🇺🇸
/tæˈkɑːmɪtər/
🇬🇧
/tæˈkɒmɪtə(r)/
noun
R
A tool that measures how fast something spins, like the speed of a car engine.
The mechanic checked the tachometer to ensure the engine was running at the correct speed.
机械师检查了转速表，以确保发动机以正确的速度运行。
translation
转速计
词形变化
Plural
tachometers